Jupiter & Saturn in 8″ scope (untracked)

Jupiter and Galilean moons plus Saturn with Canon 1100D with LX-90, ISO 1600, 1/5 second at 21:37 ACDT (click image to enlarge)

As mentioned in yesterday’s post, my Meade LX-90 8″ telescope’s AutoStar is being repaired, but tonight I decided to attempt to image the conjunction anyway with manual pointing and no tracking. Fast shutter speed and high gain was important to reduce the effects of rapid movement while obtaining enough detail.

The separation between the two planets was still around one eighth of a degree tonight, well within a low power eyepiece (24.5mm super wide angle) and my Canon 1100D’s sensor frame.

Sky Safari Pro screenshot identifying the four Galilean moons

All four Galilean moons are visible along with Saturn’s rings and the ball of the planet. Io is visible as a “bump” on Jupiter at around 11 o’clock.

Note the reversed telescopic view due to the optics.

The focus is not amazing, but under the circumstances, it turned out reasonably well. The planets were low in the sky as well.

Although I had images containing Saturn’s largest moon Titan, I wasn’t happy with the quality.

I also took a wide-field shot of the pair low on the western horizon, peeping through cloud, not long before the sky became cloud-filled. The exposure and gain make the sky appear abnormally bright.

Jupiter (top) and Saturn with Canon 1100D, 100mm focal length, f2.0, ISO 400, 1 second exposure at 21:53 ACDT

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